/*
 * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package me.ahoo.wow.metadata

import java.util.concurrent.ConcurrentHashMap

abstract class CacheableMetadataParser {
    private val cache: ConcurrentHashMap<Class<*>, Metadata> = ConcurrentHashMap()

    fun <TYPE : Any, M : Metadata> parse(type: Class<TYPE>): M {
        @Suppress("UNCHECKED_CAST")
        return cache.computeIfAbsent(type) {
            parseToMetadata(type)
        } as M
    }

    abstract fun <TYPE : Any, M : Metadata> parseToMetadata(type: Class<TYPE>): M
}
